Molding apparatus.



E. RONGERAY. MOLDING APPARATUS. urmonmn FILED JUNE20, 1913.

1 ,09 1 ,O 1 9 Patented Mar. 24, 191A 4 SHEETS-SHEET 1- //v VEN TOR.

COLUMBIA PLANOGRAPH CO.,WASHINOTON, D C

'E. RONCERAY. MOLDING APPARATUS. 'APPLIOA'IION FILED 1111320, 1913.

1,091 ,01 9. Patented Mar. 24, 1914.

,. 4 SHEETSSHEET-2.

Fiyi

11 I 32 1 IRE WITNESSES m INVENTDR MIZAAA' v COLUMBIA PLANOCRAPH c0.. WASHINGTON, D. c.

trated in Figs. 1, 2, and 3,

llNlTED STATES PATENT OFFICE.

EUGEN E RON CERAY, 0F PARIS, FRANCE, ASSIGNOR TO LISSEMENTS PH. BONVILLAIN & E. RONCERAY, 0F TION 0F FRANCE.

SOCIETE AnoNYME nus ETAB- PARIS, FRANCE, A CORPORA- MOLDING APPARATUS.

Patented Mar.

1,091,019. Specification of Letters Patent. 24, 191 Application filed .Tune 20, 1913. Serial No. 774,784. To all whom it may concern: v in the cylinder F can be Varied by turning c it known that I, EUGnNE RoNcER Y, the nut and collar 9 and arried on a citizen of France, residing at Paris, t e upper end of the piston G is a plate 6 France, have invented certain new and useon wnci are mounted the rods 7 and the ful Improvements in Molding Apparatus,

purpose of which will appear of which the following or plate 10,

be frame 1 is provided with a posltely disposed lugs 2 in which ed the rods pair of opare threadwith bores 4, whereparts to operative position; improved means in apparatus of the character specified for supporting pattern plates, strapping plates and the like on the mold table; the provision of improved means for ramming cores and other depending portions 0, and

' hollow pistons 5 connected to source of fluid pressure, hydraul being preferred. The ends of the cylinders 3 and the pistons 5 are protected by a shell 38 threaded on e projections 39 and closed by plugs 37. hese shells serve to keep the istons in alinement and also keep out sand and dirt.

The table 10 has its upper face provided with projections 11 preferably triangular shaped ribs, upon which the stripping plate 8 and the pattern plate a are adapted to rest.

the character described which is simple in character, effective in operation and which reduces the time and labor involved in completing the mold.

foregoing, together with such other cident to my invention, I attain by means of a construction which I have illustrated in the accompanying drawings wherein- Fig. l is a partial elevation and section of a portion of a molding machine embodying my invention; Fig. 2 is a plan View of the device shown in Fig. 1 with portions thereof removed to more on the mold table, the pattern plate and parts, Fig. 3 1s a partial side elevatlon and stripping plate will be in proper horizontal section of the entire machine; Flg 4 1s a position, inasmuch as the san will work side elevation of a portion of the machine lts way between the ribs. The table 10 1S 7 section through the de vice of Fig. 4; Fig. 6 is a horizontal section through the device of Fig. 4 and Fig.

is a side elevation of a machine of the roll over type to which my invention has been applied.

referring Fig. 5 is a vertical project, the ends of tl 1e rods lying substantially flush with the upper surface of the table, and with slots 13 adapted to receive the bushings 12 positioned by the nuts 13 and adapted to receive the heads of the rods 9. The bushings are provided for the reception of cores l2 or other depending mold parts and the rods 9 support such portions when the mold is stripped, as will appear.

The operation of the apparatus is as follows; The rod D is unlocked, the beam C swung to one side and the flask 14 placed on the sand frame 1 which is in the position indicated in Fig. 3, being normally held in such position by the hydraulic pressure constantly supplied the cylinders 3. The patd stripping plates being placed on the mold table, the flask and frame 1 are first to the construction illusit will be seen that the machine therein shown comprises the usual framework A provided at one side with a vertical column B, on which is rotatably mounted a cross beam C, the outer end of which is releasably locked and braced by the hooked rod D. The cross beam C has the usual cylinder E for operating the ramming head 15. lower part of the frame is a second cylinder F in which is mounted a piston G, threaded at its upper end. The relative position of the piston G part of which fits within the sand frame 1..

downflask 1 1 and frame 1 downwardly until the V 7 there illustrated I to carrythe frame 1,mounted in the blocks.

filled with sand and the pressure is admitted to the cylinder E to bring the ramming head The ramming head pushes the The arms 20 are adapted to take against the bottom portions of the blocks 21 and the weight 17 on the lever 18 normally tends to rotate the shaft 19 in such manner as to move the arms 20 to elevate the blocks 21 and rods 22. Provision is made for adjusting the elevation of the blocks 21 by means of the studs shown. When the ramming op eration takes place, the ramming head forces the frame 1 and the rods 22 downwardly against the weight 17, and when the ramming head is retracted, the weight returns the plate to normal position.

On downward movement of the blocks 21, an abutment 23 on one of said blocks comes into engagement with an arm 2 1 mounted on a rock shaft 24* carried in the frame A. At the inner end of said arm 24, the pin 24 is rotatably carried, such pin being provided with a sleeve adapted to slidably receive the rod 25 having a clevised engagement with the arm 27 rotatably carried by the pin 28 threaded into the frame A. The rod 25 carries a spring 26 normally tending to rotate the arm 27 in the direction of the arrow (Fig. 4). The downward movement of the blocks 21 causes the arm 24 to rotate the arm 27 against the pressure of the spring, and the movement of the arm 27 operates a valve (not shown) for controlling the admission of fluid pressure into the cylinder F. foot treadle is provided at one end of the shaft 2 1 and a hand lever 29 at the other end in order that the arm 27 may be actuated at will. By this construction the admission of fluid pressure into the lower cylinder to accomplish the stripping of the mold automatically takes place at the close of the ramming operation. In case it is desired to eliminate the automatic operation just above described, a suitable lever is applied to the squared end 30 of the pin 28 and the latter is turned until the arm 27 is firmly clamped to the frame A in lower position.

In Fig. 7, I have shown the same arrange ment applied to a machine of the roll over type. The rods 22 and blocks 21 in this case are elevated by the rods 37, arms 36 mounted on the rock shaft 85, and arm 34 mounted on the rock shaft at one end and connected at the other end to the counter balance weight 17 by the links 38, the weight being slidably mounted on the rod 31. In one po sition of the machine the weight tends to elevate the rods 22 toward the ramming piston and in the other position, away from said piston toward the stripping piston.

hat I claim is:

1. A molding machine comprising in combination a relatively fixed pattern support, a movable frame adjacent thereto and together with the support constituting in effect a false flask, a flask above the frame. a ramming member adapted to advance the flask and frame toward the pattern support,

latter comes into contact with any SllltablG blocks placed on top of the base of the table 1O, the movement of the parts effecting the ramming of the'mold. The frame 1 moves downwardly with the head 15 for'the reason that it is only yieldingly held in upper position. Pressure is now exhausted from the cylinder E and admitted to cylinder F and the piston Gr, plate 6, rods 7, and rods 9 are elevated. The rods 7 and 9 slide through the apertures in the table 10 and the former take against the stripping plate lifting it, the sand mold, and flask and draw the pattern from the mold. The rods 9 support cores and the like during this movement. The cross beam C is swung out of the way and the flask is removed. In the meantime, the pressure in the cylinders 3 elevates the frame 1-.to normal position and the apparatus is in condition for another operation.

The apparatus is simple and its operation rapid, while the automatic features effect considerable saving in time and labor. The provision of means whereby the pattern and stripping plate will lie in flat, horizontal position is also advantageous.

It will also be observed that the cores 12 will not be rammed to the same degree of hardness as other parts of the mold. To overcome this I provide the rods 9 with ad justable heads9 which lie in the bushings 12 and make the depth of the cores slightly greater than required in the mold. As the stripping movement is begun, the heads 9 compress the cores slightly before the rods 7 take against the stripping plate because of the lost motion between the rods 7 and the stripping plate. By adjusting the heads 9, the cores are packed to the proper hardness and compress to proper size.

For purposes of clearness in Fig. 1, the flaskhas been removed, in Fig. 2 the stripping plate hasbeen removed, and in Fig. 3, but one of the cylinders 3 appears owing to the fact that the cylinders are diagonally disposed. 1

Referring now to Figs. A, 5, and 6, I have the lower part of a machine operating in the same manner and having the same general construction as that pre viously described and I have, therefore, only shown the lower part of the machine containing a modified apparatus for supporting the frame 1 for yielding'movement. This apparatus corresponds to the hydraulic cylinders and comprises the rods 22--adapted 21 on opposite sides of the frame A; the lever .arms 20 mounted on the rock shaft 19 carried by the frame A; and the counter -balance lever 18 mounted on the shaft 19.

a means for drawing the mold, and means whereby the frame is yieldingly held in position adjacent the pattern support.

ding machine comprising in comwhereby the frame is yieldingly held in poinat1 on a relatively fixed pattern support,

the stripping draw the mold,

and means yieldingly maintaining the frame in operative position around the support and plate.

3. A molding machine bination a table, a pattern fect a false flask, ramming member flaskand frame downward toward tern support, a piston adapted to wardly to draw the mold, and a second p ton normally pressure-held in upper position for holding the frame in operative relation with the pattern support.

9. A molding machine comprising in combination a relatively fiXed plate and a stripa movable sand :trame adapted to retain the sand over the pattern and stripping plates, a flask over the for moving the flask lding machine comprising in combination a table, a pattern plate and a stripping plate carried thereb a movable sand frame adapted to retain the sand over the pattern and stripping plates, a flask over the frame, means for moving the flask and frame to ram the sand, means for elevating the stripping plate and with it the mold and flask to strip the mold from the pattern, and means independent of the means for elevating the stripping plate for yieldingly maintaining the pportin the frame in elevated operative relation wit a relatively fixed pattern support, a movable frame adjacent thereto, a flask above the frame, a ramming member adapted to advance the l in position over the pattern plates, means for yieldingly maintaining the frame in upper position,- means for ramming the sand, and means elevzltting the stripping plate to strip the l'HOlC.

6. A molding machine comprising a table, a stripping plate carried thereby having an aperture adapted a sand core, a

pattern support, said last means comprising a cylinder and a fluid actuated piston therein supporting the frame.

A molding machine comprising in combination a relatively fixed pattern support, a movable frame adjacent thereto and together with the support constituting in efframe, a

and frame toward the pattern support, means whereby the frame is yieldingly in position adjacent the pattern sup-- and ping plate to strip the mold, there being held slight lost motion between the strippinv port. plate and the movable member, the said testimony whereof I have hereunto lock being movable with said member. slg'ned my name in the presence of the two subscribing witnesses.

EUGENE RON CERAY. Witnesses HANSON 0. 00x12, EDMOND JAO UOT.

in com- V fixed pattern support, and together with the support constituting in effect a false flask, a flask above the frame, a

7. A molding machine comprising bination a relatively Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. p 

